Well, I tried a modification of Chromerust's ant food.
Two variations actually, as one was a slurry, and the other became a jello.
I used:
1 can chicken flakes (no actual chunks of chicken in the store) which were rinsed several times
2 TBSP hummingbird nectar powder
1TBSP honey
2 small slices of orange
2 small slices of apple
~50 medium crickets
~80 mealworms
~1/2 cup water
I used the blender to create a semi thick slurry.
And I poured half into a pot, bought to the start of a boil and added one packet of unflavored gelatin (1 TBSP).
While waiting for the gelatin to set I scraped some leftover chicken out of the can and put it in a few colonies.
I then offered a drop of slurry to most colonies. By then the jello had mostly set so I offered it to a few colonies.
1/2 hour later I checked the colonies.
My Tapinoma sessile are hypnotized by the plain chicken - I rarely see a strong feeding response from them. The slurry has almost zero attention. The jello is building attention, but the chicken wins.
Camponotus (small colonies <15 workers in test tubes). Most are scared of the slurry. I don't blame them, it smells like canned chicken with a twist.... A few are guzzling it down.
I put a piece of chicken in one of the test tubes and they do not appreciate it. It must smell pretty good in there, because I have 8 workers yanking on the cotton trying to get out of the tube. Usually only 3 play tug of war.
Camponotus (Small colonies 15-25 workers with a foraging area). Those with nectar available 24/7 aren't sure what to make of it. Those without the nectar available are mostly chowing down on the slurry.
Formica neorufibarbis and Formica podzolica are ignoring the slurry and jello in favor of the chicken.
Update: the next day I offered jello to the colonies. 3/4 of the Camponotus showed a good feeding response. The Formica still didn't care much for it. The Tapinoma had a slight feeding response.
I can definitely see this being a handy addition for people with very large colonies, or colonies that eat a lot.
Next time I will try another variation comprising 1 can of chicken, 30 or so medium crickets, and humming bird nectar. I will omit the honey, since most of my ants don't like it anyways.
But for now I have 1 cup of slurry (most in the freezer), and a 6"x6" tray of jello....